Mary Anne Girard

Title: Mary Anne Girard: Patents for Industrial Water Treatment

Introduction

Mary Anne Girard is an inventor associated with Philadelphia, Pennsylvania, and Betz Laboratories, Inc. Her patent work addresses ways to control slime-forming microorganisms in industrial water systems. The available information identifies 2 patents.

Latest Patents

Girard’s listed patents describe synergistic compositions intended to inhibit the growth of bacteria, fungi, and algae that produce slime in water. The applications discussed include pulp and paper manufacturing, cooling-water systems, and effluent-water treatment.

One patent, “Synergistic Compositions Containing a Polyoxyethylene Sorbitol,” concerns combining 1,3-dichloroacetone oxime acetate with polyoxyethylene sorbitol hexaoleate containing an average of 40 oxyethylene groups. The patent describes the combination as having synergistic activity against microorganisms, including *Aerobacter aerogenes*.

A second patent, “Synergistic Compositions Containing n-Alkyl (C12 40%, C14 50%, C16 10%) Dimethyl Benzyl Ammonium Chloride,” describes combining that compound with 1,3-dichloroacetone oxime acetate. It likewise focuses on controlling microorganisms responsible for slime in industrial water.

Career Highlights

Girard’s identified inventions focus on practical water-treatment challenges. By investigating combinations of antimicrobial compounds, her patent work sought to improve control of biological growth in water used in industrial processes.

Collaborations

Girard is associated with Betz Laboratories, Inc. Paul Swered is identified as a coworker.

Conclusion

Mary Anne Girard’s two listed patents reflect a focused contribution to industrial water treatment through synergistic compositions designed to inhibit slime-forming microorganisms.